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Am J Sports Med 2019 Apr 18:363546519836086. Epub 2019 Apr 18.

Rothman Orthopaedic Institute, New York, New York, USA.

Background: Ulnar collateral ligament reconstruction (UCLR) is a successful procedure in professional baseball players. It is unclear whether graft choice affects results.

Purpose: Determine performance and rate of return to sport (RTS) in professional baseball players after UCLR and compare performance and RTS rate, as well as injury rates, between players who underwent UCLR with hamstring versus palmaris autograft. Read More

Int J Sports Phys Ther 2019 Apr;14(2):214-227

Department of Physical Education and Sports Sciences, Karaj Branch, Islamic Azad University, Karaj, Iran.

Background: Deficits in dynamic neuromuscular control of the knee may contribute to the higher incidence of the anterior cruciate ligament (ACL), specifically in female athletes. Little is known about the effects of preventive training programs on muscle onset time and activation during functional tasks.

Purpose: The purpose of this study was to evaluate the efficacy of perturbation-enhanced neuromuscular training on hamstring and quadriceps onset time and activation, and knee flexion angle in female athletes with quadriceps dominance (QD) deficit during a tuck-jump (TJ) task. Read More

Arthroscopy 2019 Apr 12. Epub 2019 Apr 12.

Department of Orthopedics, University of Colorado School of Medicine, Aurora, Colorado, U.S.A.. Electronic address:

Purpose: To determine the prevalence of clinically diagnosed femoroacetabular impingement (FAI) in a consecutive series of patients presenting with proximal hamstring tendon injury and to correlate this with pelvic anatomic factors.

Methods: The prevalence of clinically symptomatic cam-, pincer-, and mixed-type and overall FAI was calculated among a consecutive series of patients presenting to a hip preservation clinic with a confirmed clinical and radiographic diagnosis of proximal hamstring tendon injury between 2012 and 2017. The presence of a cam lesion was determined by an alpha angle > 50° on radiographs and computed tomography radial sequences of the head-neck junction and a femoral head-neck offset ratio < 0. Read More

J Strength Cond Res 2019 Apr 10. Epub 2019 Apr 10.

Department of Physical Education, Gdansk University of Physical Education and Sport, Gdansk, Poland.

Stastny, P, Lehnert, M, De Ste Croix, M, Petr, M, Svoboda, Z, Maixnerova, E, Varekova, R, Botek, M, Petrek, M, Lenka, K, and Cięszczyk, P. Effect of COL5A1, GDF5, and PPARA genes on a movement screen and neuromuscular performance in adolescent team sport athletes. J Strength Cond Res 12XX(2X): 000-000, 2019-The risk of injury increases with adolescents' chronological age and may be related to limited muscle function neuromuscular, genetic, and biomechanical factors. Read More

J Sports Sci 2019 Apr 9:1-10. Epub 2019 Apr 9.

c Department of Neurobiology, Physiology, and Behaviour , University of California Davis , Davis, CA , USA.

Current nutrition and exercise focus during rehabilitation periods has been on reducing muscle atrophy associated with immobilisation. This case report outlines a best practice anterior cruciate ligament (ACL) rehabilitation programme undertaken by two professional rugby athletes, with the addition of an evidence-based supplementation (gelatine and vitamin C) and exercise protocol focused on collagenous tissue. Both players ruptured their left ACL and were repaired with a traditional hamstring graft. Read More

Phys Ther Sport 2019 Mar 29;37:144-149. Epub 2019 Mar 29.

La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Melbourne, Australia.

Objectives: To determine eccentric knee flexor strength in elite female Australian Rules Football (ARF) players with and without a history of unilateral anterior cruciate ligament reconstruction (ACLR) using an ipsilateral semitendinosus graft.

Design: Case-control.

Setting: Elite ARF Women's competition. Read More

J Orthop Surg (Hong Kong) 2019 May-Aug;27(2):2309499019839022

Department of Orthopaedic Surgery, Baylor Scott and White Medical Center-Temple, Temple, Texas, USA.

Various surgical techniques exist to approach an ischial tuberosity avulsion fracture, including open reduction and internal fixation with screws and suture anchors, augmentation with allograft tendon, and excision of the fragment. However, the majority of these techniques approached acute fractures, and nonunions were not addressed nor studied. This case series describes two adolescent patients treated for ischial tuberosity nonunions with a posterior column screw through a subgluteal approach. Read More

BMC Musculoskelet Disord 2019 Mar 30;20(1):138. Epub 2019 Mar 30.

Department of Orthopedics, Helsingborg Hospital, Helsingborg, Sweden.

Background: The gracilis tendon is commonly used as an autograft to reconstruct torn tendons or ligaments in many parts of the body. Little is known about the subjective and functional outcome after gracilis tendon harvest. The aim of this study was to evaluate the outcome of the donor leg in patients undergoing such surgery. Read More

J Orthop Surg (Hong Kong) 2019 May-Aug;27(2):2309499019837653

2 Department of Orthopaedic Surgery, Gunma University Graduate School of Medicine, Gunma, Japan.

Purpose:: The aim of the present study was to investigate the correlations among the preoperative and postoperative knee laxity, the clinical results, and the type of remnant tissue following the anterior cruciate ligament (ACL) reconstruction.

Methods:: One hundred ninety-two patients (male, n = 101; female, n = 91; mean age, 27.1 years) with ACL-deficient knees who had undergone double-bundle reconstruction were included. Read More

J Orthop Sports Phys Ther 2019 Mar 26:1-37. Epub 2019 Mar 26.

Université Cote d'Azur, LAMHESS, Nice, France.

Background: In the bilateral Nordic hamstring exercise (NHE), hamstrings operate at relatively short lengths, which may limit this exercise's efficacy in hamstring injury prevention.

Objectives: To examine knee flexion torque, and biceps femoris long head (BFlh) and semitendinosus (ST) high-density electromyography (HD-EMG) activity during unilateral and bilateral NHE performed with either neutral (NHE0) or 90° flexed (NHE90) hips.

Methods: Exercises were performed on a novel device at eccentric 1-repetition maximum load defined for 90-15° knee range of motion. Read More

Arthrosc Tech 2019 Feb 22;8(2):e163-e173. Epub 2019 Jan 22.

Knee Surgery-Arthroscopy and Sports Injuries Unit, Orthopedic Department, Mansoura University, Mansoura, Egypt.

Combined anterior cruciate ligament (ACL) and medial collateral ligament (MCL) injuries are the most common type of combined ligamentous injury of the knee. The optimal treatment for these combined injuries is controversial. Combined ACL and MCL-posterior oblique ligament (POL) reconstruction avoids late anteromedial rotatory instability and chronic valgus instability of the knee and decreases the increased stress on the ACL graft. Read More

Int J Exerc Sci 2019 1;12(1):343-354. Epub 2019 Mar 1.

College of Nursing and Health Sciences, Barry University, Miami Shores, FL, USA.

The purpose of this study was to determine the acute effect of hamstring foam rolling on proprioception at the knee and hip joints. Twenty-five participants completed two proprioceptive tests on separate days, in a random order. The joint position matching test used no visual feedback. Read More

J Orthop Surg Res 2019 Mar 21;14(1):85. Epub 2019 Mar 21.

Sports Medicine Department, Rasoul Akram Hospital, Iran University of Medical Sciences, Tehran, Iran.

Objective: We compared autografts and allograft using partial and complete transphyseal anterior cruciate ligament (ACL) reconstruction techniques among skeletally immature individuals.

Methods: Male and females younger than 18 and 16 years old, respectively, diagnosed with ACL tear from April 2006 to March 2012 entered the study. One group had four-strand hamstring autograft, and the other had tibialis posterior allograft reconstruction. Read More

Am J Sports Med 2019 Apr 21;47(5):1111-1116. Epub 2019 Mar 21.

Rothman Orthopaedic Institute, New York, New York, USA.

Background:: Ulnar collateral ligament reconstruction (UCLR) is a successful procedure among professional baseball pitchers. It is unclear if hamstring tendon harvest side for UCLR affects the outcome or alters the risk for subsequent hamstring injury.

Hypothesis:: Players with prior UCLR with ipsilateral (drive leg) hamstring autograft will have the same return-to-sport (RTS) rate and performance upon RTS but a higher number of subsequent lower extremity injuries than those with contralateral (landing leg) hamstring autograft. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Mar 19. Epub 2019 Mar 19.

Orthopaedics and Sports Orthopaedics Clinic, Metropolitan Hospital, Ethnarchou Makariou 9 & El. Venizelou 1, N. Faliro, 18547, Piraeus, Greece.

Purpose: To compare the "all-inside technique" for anterior cruciate ligament (ACL) reconstruction using a short, quadrupled semitendinosus tendon (ST4) autograft and suspensory cortical fixation on both the femoral and tibial side vs the "conventional technique" using a semitendinosus/gracilis (ST/G) autograft fixed with a suspensory device on the femoral side and with an interference screw on the tibial side, in terms of clinical and functional outcomes.

Methods: A total of 90 patients were enrolled, randomised into two groups, and prospectively followed. Group A comprised 45 patients treated with the all-inside technique and Group B included 45 patients treated with the conventional ACL technique (55 males, 35 females; mean age 28. Read More

Medicine (Baltimore) 2019 Mar;98(11):e14851

Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu.

Purpose: To investigate whether single femoral, single tibial tunnel anatomic double-bundle anterior cruciate ligament (ACL) reconstruction is equal to or superior to double femoral, double tibial tunnel ACL double-bundle anatomic reconstruction in terms of restoring the stability and functions of the knee joint.

Methods: A prospective clinical study was performed to compare 30 cases of single-tunnel ACL double-bundle anatomic reconstruction to 28 cases of double-tunnel ACL double-bundle anatomic reconstruction, with average follow-up of 36 months. All graft tendons were hamstring tendon autografts. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Mar 15. Epub 2019 Mar 15.

Nicolaas Institute of Constructive Orthopaedics Research and Education Foundation for Arthroplasty and Sports Medicine at Medistra Hospital, Jl. Jendral Gatot Subroto Kav. 59, 6th floor, Jakarta, 12950, DKI Jakarta, Indonesia.

Purpose: A peroneus longus tendon autograft is used in many orthopaedic procedures and it is biomechanically comparable to a hamstring tendon autograft. Despite its potential, there are few studies that have evaluated the use of the peroneus longus tendon in ACL reconstruction. The aim of this study was to compare the clinical outcome and donor site morbidity of ACL reconstruction with hamstring tendon autografts versus peroneus longus tendon autografts in patients with an isolated ACL injury. Read More

Int J Sports Med 2019 Mar 14. Epub 2019 Mar 14.

The SPORT Center, Division of Sports Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States.

Hamstring strain injury (HSI) is one of the most prevalent and severe injury in professional soccer. The purpose was to analyze and compare the predictive ability of a range of machine learning techniques to select the best performing injury risk factor model to identify professional soccer players at high risk of HSIs. A total of 96 male professional soccer players underwent a pre-season screening evaluation that included a large number of individual, psychological and neuromuscular measurements. Read More

BMC Musculoskelet Disord 2019 Mar 14;20(1):109. Epub 2019 Mar 14.

Sports Clinic Cologne at Cologne Merheim Medical Center, Cologne, University of Witten/Herdecke, Ostmerheimerstraße 200, D-51109, Cologne, Germany.

Background: The objective of the study was to compare the results of a primary anterior cruciate ligament reconstruction (ACLR) using the press-fit fixation technique for a quadriceps tendon (QT) graft to a standard quadrupled hamstring (HT) graft with interference screw fixation.

Methods: A retrospective cohort study with a 12-month follow up provided data for 92 patients. Exclusion criteria were accompanying ligament injuries and contralateral ACL injury. Read More

J Sport Rehabil 2019 Mar 12:1-19. Epub 2019 Mar 12.

1 School of Kinesiology and Recreation, Illinois State University, Normal, IL.

Context:: Decreased hamstring flexibility can lead to a plethora of musculoskeletal injuries, including low back pain, hamstring strains, and patellofemoral pain. Lack of flexibility may be the result of myofascial adhesions. The fascia connected to the hamstrings is part of the superficial back line that runs from the cranium to the plantar aspect of the foot. Read More

Clin J Sport Med 2019 Mar 4. Epub 2019 Mar 4.

Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.

Objective: To compare the clinical efficacy of anterior cruciate ligament (ACL) reconstruction with 4-strand hamstring tendon autograft (4SHG), allograft and the Ligament Advanced Reinforcement System (LARS) ligament, and to find the causes of cumulative failure or nonreturn to sport.

Design: Retrospective case series.

Setting: Department of Orthopedic Surgery, the second affiliated hospital of Soochow University, Suzhou, Jiangsu, China. Read More

Eur J Sport Sci 2019 Mar 4:1-7. Epub 2019 Mar 4.

b Clinical Medicine Department , Miguel Hernandez Univesity , San Juan de Alicante , Spain.

This study aimed to assess the cost-effectiveness of the "Fédération Internationale de Football Association (FIFA) 11" injury prevention programme for ankle and hamstring injuries. This retrospective cohort study included eighty-four male amateur football players aged 18-40 years. The exposed group performed the FIFA 11 protocol twice a week throughout the 2010-2011 and 2011-2012 seasons; the unexposed group performed the usual training during the 2008-2009 and 2009-2010 seasons. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Mar 1. Epub 2019 Mar 1.

Center for Joint Surgery and Sport Injuries, Sportopaedie Heidelberg, Clinic St. Elisabeth Heidelberg, Max Reger Strasse 5-7, 69121, Heidelberg, Germany.

Purpose: Due to the increased importance of revision ACL reconstruction, this study aims to evaluate the outcome 4 years after the surgery, compare two revision strategies and identify factors that influence the results.

Methods: Seventy-nine patients who received a revision ACL reconstruction were retrospectively evaluated. All patients were assessed with an average follow-up of 4. Read More

Br J Sports Med 2019 Feb 26. Epub 2019 Feb 26.

Department of Rehabilitation, Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.

Research Question: Does the Nordic hamstring exercise (NHE) prevent hamstring injuries when included as part of an injury prevention intervention?

Design: Systematic review and meta-analysis.

Eligibility Criteria For Selecting Studies: We considered the population to be any athletes participating in any sporting activity, the intervention to be the NHE, the comparison to be usual training or other prevention programmes, which did not include the NHE, and the outcome to be the incidence or rate of hamstring injuries.

Analysis: The effect of including the NHE in injury prevention programmes compared with controls on hamstring injuries was assessed in 15 studies that reported the incidence across different sports and age groups in both women and men. Read More

Phys Ther Sport 2019 Feb 18;37:21-26. Epub 2019 Feb 18.

Sports Injuries Research Group, Edge Hill University, St Helens Road, Ormskirk, Lancs, L39 4QP, UK. Electronic address:

Objectives: To investigate the influence of soccer-specific fatigue on concurrent changes in knee joint kinematics and hamstring strength, given the increased risk of injury during the latter stages of match-play and the prevalence of knee joint and hamstring muscular injury.

Design: Repeated measures, randomized order trials.

Setting: Laboratory. Read More

Orthop J Sports Med 2019 Feb 15;7(2):2325967119825854. Epub 2019 Feb 15.

University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.

Background: Previous studies have acknowledged the medial patellofemoral ligament (MPFL) as the primary stabilizer of the patella, preventing lateral displacement. MPFL reconstruction (MPFL-R) restores stability and functionality to the patellofemoral joint and has emerged as a preferred treatment option for recurrent lateral patellar instability.

Purpose: To objectively measure biomechanical characteristics of athletes cleared for return to sport after MPFL-R compared with healthy controls. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Feb 22. Epub 2019 Feb 22.

Department of Orthopedics, The General Hospital of Chinese People's Liberation Army, 28 Fuxing Road, Haidian District, Beijing, 100853, China.

Purpose: The aim of this study was to introduce a modified anatomical anterior cruciate ligament reconstruction using functional double bundles (F-DBACLR), which achieved sequential tensioning at all flexion angles postoperatively, and compare its clinical outcomes with the anatomical single-bundle technique (A-SBACLR).

Methods: A total of 156 patients with an ACL injury underwent ACLR (A-SB group, n = 78; F-DB group, n = 78). All operations were performed by anatomically identifying the ACL footprints and fixing the graft at a pre-determined degree of knee flexion. Read More

J Strength Cond Res 2019 Mar;33(3):839-845

School of Sport, Health and Applied Science, St Mary's University, Twickenham, London, United Kingdom.

Madison, G, Patterson, SD, Read, P, Howe, L, and Waldron, M. Effects of small-sided game variation on changes in hamstring strength. J Strength Cond Res 33(3): 839-845, 2019-Small-sided games (SSGs) are commonly used by soccer practitioners to condition players. Read More

Orthop J Sports Med 2019 Feb 5;7(2):2325967118824149. Epub 2019 Feb 5.

Cedars-Sinai Kerlan-Jobe Institute, Santa Monica, California, USA.

Background: Despite an abundance of literature regarding construct strength for a myriad of anchors and anchor configurations in the shoulder, there remains a paucity of biomechanical studies detailing the efficacy of these implants for proximal hamstring repair.

Purpose: To biomechanically evaluate the ultimate failure load and failure mechanism of knotless and knotted anchor configurations for hamstring repair.

Study Design: Controlled laboratory study. Read More

Sports (Basel) 2019 Feb 15;7(2). Epub 2019 Feb 15.

Laboratory of Neuromechanics, Department of Physical Education and Sport Science at Serres, Aristotle University of Thessaloniki, Greece.

The purpose of this study was to compare the hamstring to quadriceps ratio (H:Q) obtained from three different hip flexion angles. Seventy-three young athletes performed maximum isokinetic concentric and eccentric knee extension and flexion efforts at 60 °·s and 240 °·s from hip flexion angles of 90°, 60°, and 120°. The conventional (concentric to concentric), functional (eccentric to concentric) and mixed (eccentric at 30 °·s to concentric torque at 240 °·s) H: Q torque ratios and the electromyographic activity from the rectus femoris and biceps femoris were analyzed. Read More

Knee Surg Sports Traumatol Arthrosc 2019 Feb 18. Epub 2019 Feb 18.

Department of Molecular Medicine and Surgery, Stockholm Sports Trauma Research Center, Karolinska Institutet, Stockholm, Sweden.

Purpose: To assess the percentage of patients achieving symmetrical knee function 6 months after primary anterior cruciate ligament (ACL) reconstruction (ACLR) and to identify factors affecting its achievement, in a large cohort.

Methods: Data were extracted from our clinic database. Patients who underwent primary ACLR from 2000 to 2015 and were assessed with the isokinetic quadriceps and hamstring muscles strength tests and single-leg-hop test at the 6-month follow-up were included in the study. Read More

Knee 2019 Feb 13. Epub 2019 Feb 13.

School of Health and Rehabilitation Sciences, The Ohio State University, Columbus, OH, USA; Sports Medicine Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, USA; Division of Physical Therapy, The Ohio State University, Columbus, OH, USA. Electronic address:

Purpose: The purpose of this study was to investigate how patient-reported knee function changed over a two-year period in young athletes after anterior cruciate ligament reconstruction (ACLR) and return-to-sport (RTS), and to determine the impact of clinical measures, after controlling for demographic and surgical covariates.

Methods: At the time of RTS after primary, unilateral ACLR, the following data were collected in 67 young athletes: Quadriceps (QF), hamstring (HS), and hip abduction (HA) strength; knee range-of-motion, effusion, and anterior laxity; and patient-reported function using the Knee injury and Osteoarthritis Outcome Score (KOOS). At two years post-RTS, patient-reported function was reevaluated using the KOOS. Read More

J Orthop Sports Phys Ther 2019 Mar 15;49(3):145-153. Epub 2019 Feb 15.

Background: Following anterior cruciate ligament reconstruction (ACLR), young athletes demonstrate deficits in knee function and strength whose association with successful return to preinjury sports participation is not well understood.

Objectives: To examine differences in knee function and strength at the time of return-to-sport clearance between young athletes who successfully resumed preinjury sports participation, those who did not resume preinjury sports participation, and those who sustained a second anterior cruciate ligament (ACL) injury by 1 year following return-to-sport clearance.

Methods: This prospective cohort study collected data in 124 young athletes (mean ± SD age, 17. Read More

Mymensingh Med J 2019 Jan;28(1):126-136

Professor Dr Abu Zaffar Chowdhury, Chairman Department of Orthopaedic Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh.

Anterior cruciate ligament injury is one of the commonest sports injuries, which often markedly reduces activity and the quality of life. The autologous hamstring double bundle graft and single bundle graft are commonly used for anterior cruciate ligament reconstruction. The choice of graft material for ACL reconstruction is believed to play a major role in the outcome but still there are controversies about the graft selection for primary ACL reconstruction. Read More

J Strength Cond Res 2019 Feb 7. Epub 2019 Feb 7.

Department of Orthopedics and Sports Medicine, Houston Methodist, Houston, Texas.

Hedt, CA, Pearson, JM, Lambert, BS, McCulloch, PC, and Harris, JD. Sex-related hip strength measures among professional soccer players. J Strength Cond Res XX(X): 000-000, 2019-Lower-extremity musculoskeletal injuries in soccer are common among sexes. Read More

J Sport Rehabil 2019 Feb 12:1-23. Epub 2019 Feb 12.

1 Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Brazil.

Context:: Hamstring strain injury (HSI) is the most prevalent injury in football (soccer), and a few intrinsic factors have been associated with higher injury rates.

Objective:: To describe the prevalence of the main intrinsic risk factors for HSI in professional and under-20 football players.

Design:: Cross-sectional study. Read More

Eur J Sport Sci 2019 Feb 10:1-9. Epub 2019 Feb 10.

c Health Research Institute, University of Limerick , Limerick , Ireland.

The purpose of this study was to examine the effect of fatiguing exercise on sex-related differences in the function of hamstring and quadriceps muscles at several angular velocities and joint angles. Physically active participants (50 male: 28.7 ± 4. Read More

SAGE Open Med Case Rep 2019 11;7:2050313X18823102. Epub 2019 Jan 11.

Department of Orthopedic Surgery, Jichi Medical University, Shimotsuke, Japan.

Knee dislocation with concomitant multiligament injury is a rare and devastating injury. We report the successful repair of a rare case of open knee dislocation with concomitant multiligament injury and patellar tendon rupture of an 18-year-old male due to a motorcycle accident. The patient presented with an open wound running parallel to the knee joint line and patellar tendon rupture with full exposure of the cartilage of the distal femur. Read More

Phys Ther Res 2018 30;21(2):44-52. Epub 2018 Aug 30.

Faculty of Health and Sport Sciences, University of Tsukuba.

Neurocognitive function may be a risk factor for anterior cruciate ligament (ACL) injury by changing neuromuscular control such as muscle activities. However, the effect of differences in neurocognitive function on biomechanics and neuromuscular control related to ACL injury risk is not clear. The purpose of this study was to examine the effect of differences in neurocognitive function on biomechanics and neuromuscular control during an unanticipated side-step cutting motion. Read More

J Man Manip Ther 2019 Feb 1;27(1):15-23. Epub 2018 Aug 1.

Physical Therapy Program, Department of Exercise Science, University of South Carolina, Columbia, United States of America.

: Tight hamstrings contribute to inefficiency of movement and increased risk for injury. Static stretching is the most common intervention for this problem, but the use of alternatives like instrument-assisted soft tissue mobilization (IASTM) and proprioceptive neuromuscular facilitation (PNF) is increasing among clinicians. This study examined two prospective studies with the common aim of demonstrating the effectiveness of IASTM or PNF over static stretching for improving hamstring tightness. Read More

J Biomech 2019 Feb 9;84:204-210. Epub 2019 Jan 9.

Faculty of Medicine, Memorial University of Newfoundland, St. John's, Canada. Electronic address:

Clinical observations have suggested that limited hamstring flexibility may be associated with sagittal spinal curvatures in spine flexed postures. Thus, limited hamstring flexibility may be related to large amounts of spine flexion in "slumped" sitting postures which could contribute to low back pain and injury. The aim of this study was to determine if hamstring and pelvic flexibility are associated with flexed sitting postures using a backless office chair. Read More

J Sport Rehabil 2019 Jan 24:1-19. Epub 2019 Jan 24.

2 Department of Exercise Health Science, National Taiwan University of Sport.

Context:: Squats and lunges are common exercises frequently applied in muscle strengthening and therapeutic exercises. The loading devices are often used to increase the training intensity.

Objective:: To determine the effect of loading devices on muscle activation in squat and lunge, and to compare the differences in muscle activation between squat and lunge. Read More

Disabil Rehabil 2019 Jan 22:1-7. Epub 2019 Jan 22.

c Department of Sport and Rehabilitation Sciences , University of Liège , Liège , Belgium.

Study Design: This consisted of a translation and validation study.

Background: Acute hamstring injury is a frequent muscle strain in sports that require high explosive strength, impulsion or running phases. Therefore, the Functional Assessment Scale for Hamstring Injury questionnaire was developed to assess pain, physical activity level and ability to perform various exercises in patients with hamstring injuries. Read More

Br J Sports Med 2019 03 19;53(6):e2. Epub 2019 Jan 19.

Ortop Traumatol Rehabil 2018 Aug;20(4):285-291

Bozyaka Education and Research Hospital, Izmir, Turkey.

Background: The purpose of this study is to describe the role of Platelet Rich Plasma in preventing tunnel enlargement in anterior cruciate ligament reconstruction with a hamstring autograft Material and methods. Forty-four patients who underwent transtibial reconstructive surgery with a hamstring tendon autograft between March 2014 and July 2015 were included in this study. This study involved two groups. Read More

Ortop Traumatol Rehabil 2018 Aug;20(4):257-270

Uniwersytet Medyczny im. Piastów Śląskich, Wrocław, Polska / Wroclaw Medical University, Poland Zakład Medycyny Sportowej, Katedra Fizjoterapii, Wydział Nauk o Zdrowiu / Division of Sports Medicine, Department of Physiotherapy, Faculty of Health Sciences.

Distal biceps tendon injuries are relatively rare. Standard treatment of complete tears and significant partial tears involves surgical anatomical reinsertion of the tendon at the radial tuberosity. Chronic injuries are usually managed with surgical tendon reconstruction using autografts or allografts. Read More

Med Sci Sports Exerc 2019 Jan 10. Epub 2019 Jan 10.

Department of Rehabilitation Sciences and Physiotherapy, Ghent University, Ghent, Belgium.

Introduction: Side-to-side strength differences are often used in return to sport (RTS) decision making following hamstring injury. In football (soccer), there is little consensus, and a side-to-side difference of <10% is often suggested as a criterion. To date, no study has determined whether differences exist when comparing the strength of the injured limb at RTS to the pre-injury level. Read More

Acta Physiol (Oxf) 2019 Jan 11:e13253. Epub 2019 Jan 11.

Exercise and Training Science, Department of Performance, Neuroscience, Therapy and Health, MSH Medical School Hamburg, University of Applied Sciences and Medical University, Hamburg, Germany.

Sports (Basel) 2019 Jan 9;7(1). Epub 2019 Jan 9.

Department of Rehabilitation, Nutrition, and Sport, School of Allied Health, Latrobe University, Bundoora Victoria 3083, Australia.

The tactical and technical components of training become a primary emphasis, leaving less time for targeted development of physical qualities that underpin performance during the competition phase of a training program. A deemphasis on physical preparation during the in-season training phase may make athletes more susceptible to injury and decrease performance on the field. Two weeks prior to the start and one week following the conclusion of the 16-week collegiate lacrosse season, lower body force production was assessed in eight National Collegiate Athletic Association (NCAA) Division I Men's Lacrosse athletes. Read More